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<b><i>db</i> <b>count</b></b>
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<b><pre>db count key
</pre></b>
<b>Description(db count)</b>
<p>The <i>db</i> <b>count</b> command returns a count of the number of duplicate
data items for the key given.  If the key does not exist, a value of 0
is returned.  If there are no duplicates, or if the database does not
support duplicates, but a key/data pair exists, a value of 1 is
returned.  If an error occurs, a Berkeley DB error message is returned or a
Tcl error is thrown.</p>
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